and the audience. Harbisson is the artist, the work of art, the space where it exists, and the only one in the audience. Sense of Colour: Cyborg Antenna The Cyborg Antenna is a sensory system created to extend color perception. It is implanted and osseointegrated in Harbisson's head and it sprouts from within his occipital bone. It has been permanently attached to Harbisson's head since 2004 and it allows him to feel and hear colours as audible vibrations inside his head, including colours invisible to the human eye such as infrareds and ultraviolets. The antenna also allows internet connection and therefore the reception of colour from other sensors or from satellites. Harbisson began developing the antenna at college in 2003 with Adam Montandon and it was upgraded by Peter Kese and Matias Lizana, among others. The antenna implant surgery was repeatedly rejected by bioethical committees but went underway regardless by anonymous doctors. Harbisson has given permission to five friends, one in each continent, to send colours, images, videos or sounds directly into his head. If he receives colours while asleep his friends can colour and alter his dreams. The first public demonstration of a skull-transmitted image was broadcast live on Al Jazeera's chat show The Stream. The first person to make a phone call directly into his skull was Ruby Wax.In 2014, Harbisson executed the world's first skull-transmitted painting. Colours sent from audience members in Times Square as they painted simple coloured stripes onto a canvas were received live via internet directly into Harbisson's brain. He correctly identified and painted the same color stripes onto a canvas in front of an audience at The Red Door, 10 blocks away from Times Square. Sense of Time: Solar Crown The Solar Crown is a sensory device for the sense of time. A rotating point of heat takes 24 hours to slowly orbit around Harbisson's head. When he feels the point of heat in the middle of his forehead it is midday solar time in London (longitude 0°), when the heat reaches his right ear it is midday in New Orleans (longitude 90°). When his brain gets accustomed to the passage of time on his head, he will explore if he can modify his perception of time by altering the speed of rotation. Harbisson states that in the same way we can create optical illusions because we have eyes for the sense of